Classification The deuteromycotes are fungi that lack organs for sexual reproduction. The term "deuteromycotes" in the literature refers to those asco- or basidiomycotes that have lost their potential to differentiate asci or basidia. A scientific problem is to relate each to its sexual relative-but this is often impossible, because they have so little distinctive morphology…Most of them are thought to have evolved from ascomycotes because of the resemblance of their mycelium and the conidia to those of known ascomycote genera. Sexual structures have been discovered in some species originally classified as Fungi Imperfecti (deuteromycotes), enabling their reclassification with the ascomycotes or basidiomycotes. [details]